<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/fruit.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginFormRef"
        :rules="loginFormRules"
        :model="loginForm"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="el-icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="el-icon-lock"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: "",
        password: "",
      },
      // 这是表单的验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "长度在 6 到 15 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods:{
    //   点击重置按钮，重置登录表单
      resetLoginForm(){
          this.$refs.loginFormRef.resetFields()
      },
      // 登录
      login(){
          this.$refs.loginFormRef.validate(async (valid)=>{
              if(!valid){
                  return;
              }else{
                  const res = await this.$http.post('login',this.loginForm)
                  console.log(res)
                  if(res.data.status !== 200) {
                    if(res.data.status == 421){
                      return this.$message.error('用户名不存在!')
                    }else if(res.data.status === 420){
                      return this.$message.error('用户被禁用!')
                    }else{
                      return this.$message.error('密码错误!')

                    }
                  }else{
                    this.$message.success('登录成功')
                    // 将token存入sessionStorage
                    window.sessionStorage.setItem('token',res.data.token)
                    this.$router.push('/home')
                  }
              }
          })

      }
  }
};
</script>

<style lang="less" scoped>
html body .login_container {
  height: 100%;
  background: #D8EBAB;
}

.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 150px;
    height: 150px;
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 50%;
    // padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
  position: absolute;
  bottom: 0;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>